13
Ti-Research
Depending on the density of the alloys used different distances from the metal
ring are recommended:
non precious alloys
approx. 1 cm to the inner side of metal ring
precious alloys (reduced) approx. 1,5 cm to the inner side of metal ring
precious alloys
approx. 2 cm to the inner side of metal ring
These recommendations may vary depending on the alloy, investment material
and mould temperature.
Best values are to be determined individually at work with the materials used.
Invest
Prior to the investment an approx. 1 mm thick liner of 25 mm width for the
small metal ring
7
or 55 mm width for the large metal ring
6
respectively are to
be placed to the inner side of rings (Fleece 25 or Fleece 55 of
Ti-Research
is
recommended). A small contact zone of approx. 2 mm on top and bottom side
remains to prevent the mould from sliding out of the hot metal ring.
Important!
While pourring the invest material into the ring the shaped edge of the
ring must be on top.
Invest the modellation with a suitable investment (e. g. Invest C/P or Invest NP
by
Ti-Research
)
Important!
By filling the prepared metal ring placed on the mould socket 8 with
invest-material care has to be taken that the invest material does not
exceed the edge of the metal ring. Otherwise mounting of the mould
into the mould holder is more difficult or not possible.